<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
</head>
<body>
    没注册的用户请<a href="/user/pre_register">注册</a>!<br>
    已注册的用户请<a href="/user/pre_login">登陆</a>!

</body>
</html>